How we scoreBlogAdvertise
html›body›main#compare791 models · updated Oct 21, 2026
  1. compoundsemi.com
  2. Compare
  3. TK21R vs P91

Fenix TK21R vs Nextorch P91

What TK21R does better (4) and where P91 wins (2) — every spec side by side.

Fenix TK21R
Fenix · 2025TK21R
8.5Score
4 advantages≈ $135
Higher score
vs
Nextorch P91
Nextorch · 2024P91
5.7Score
2 advantages≈ $145
8.0Brightness & throw6.6
8.2Battery & charging5.6
5.5Build & durability3.4
5.9Features5.9
Dimensions

Size comparison

TK21RP91
36 × 159.525.436 × 16028.5
TK21RP91Difference
Length / height159.5 mm160 mm−0.5 mm
Head diameter / width36 mm36 mm=
Body diameter / depth25.4 mm28.5 mm−3.1 mm
Weight221 g165 g+56 g

Drawn to the same scale from the official dimensions (front and side).

Why is TK21R better than P91?

  1. Peak beam intensity57,600 cd vs 22,500 cd2.6×
  2. Beam distance (ANSI FL1)480 m vs 300 m+60%
  3. Battery capacity6,000 mAh vs 4,800 mAh+25%
  4. Maximum runtime72.5 h vs 60 h+21%

Why is P91 better than TK21R?

  1. Maximum output3,600 lm vs 5,000 lm+39%
  2. Weight221 g vs 165 g+34%
Specifications

Side by side

Fenix TK21RFenix TK21R≈ $1358.5
Nextorch P91Nextorch P91≈ $1455.7
Light output
Maximum output3,600 lm5,000 lm
Peak beam intensity57,600 cd22,500 cd
Beam distance (ANSI FL1)480 m300 m
Light sourceLEDLED
LED & beam
LED emitterLuminus SFT-90—
LED makerLuminus—
Colour temperature6,600K—
Battery & charging
Battery21700 Li-ion21700 Li-ion
Battery capacity6,000 mAh4,800 mAh
Maximum runtime72.5 h60 h
RechargeableYesYes
USB-C chargingYesYes
Battery level indicatorYes—
Build & durability
Protection ratingIP68—
Water protection (IPx)IPx8—
Submersible to—1 m
Impact resistance (drop)—1 m
Body materialAluminiumAluminium
Size & weight
Length / height159.5 mm160 mm
Head diameter / width36 mm36 mm
Body diameter / depth25.4 mm28.5 mm
Weight221 g165 g
Modes & features
SwitchDual switchesDual switches
Tactical tail switch (momentary on)YesYes
StrobeYesYes
Mode memoryYes—
To compare: 0up to 4 models
Compare